A Study of Bortezomib, Lenalidomide and Dexamethasone (VRd) Followed by Cilta-cel, a CAR-T Therapy Directed Against BCMA Versus VRd Followed by Lenalidomide and Dexamethasone (Rd) Therapy in Participants With Newly Diagnosed Multiple Myeloma for Whom ASCT is Not Planned as Initial Therapy

Inclusion Criteria: * Documented diagnosis of multiple myeloma (MM) according to International Myeloma Working Group (IMWG) diagnostic criteria * Measurable disease at screening as defined by any of the following: Serum monoclonal paraprotein (M-protein) level greater than or equal to (\>=)1.0 gram per deciliter (g/dL) or urine M-protein level \>=200 milligram (mg)/24 hours; or Light chain MM in whom only measurable disease is by serum free light chain (FLC) levels: Serum immunoglobin (Ig) free light chain \>=10 milligrams per deciliter (mg/dL) and abnormal serum Ig kappa/lambda FLC ratio * Eastern Cooperative Oncology Group Performance Status grade of 0 or 1 * Not considered for high-dose chemotherapy with Autologous Stem Cell Transplant (ASCT) due to: Ineligible due to advanced age; or Ineligible due to presence of comorbid condition(s) likely to have a negative impact on tolerability of high-dose chemotherapy with ASCT; or Deferral of high-dose chemotherapy with ASCT as initial treatment * A woman of childbearing potential (WOCBP) must have 2 negative highly sensitive serum or urine pregnancy tests (beta-human chorionic gonadotropin) prior to starting Bortezomib, Lenalidomide and Dexamethasone (VRd) and must agree to further testing during the study. * Clinical laboratory values meeting the following criteria during the screening phase: hemoglobin greater than or equal to (\>=) 8.0 g/dL (\>=5 millimoles per liter \[mmol/L\]), recombinant human erythropoietin use is permit…